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UNITED STATES EDWARD P ICKFORD, OF NEW BRUNSWICK, NEW JERSEY.

IMPROVEMENT IN LOOMS FOR WEAVING PILED FABRICS.

Speeiication forming part of Letters Patent N o. 139,328, dated May27,1873; application filed April 19, 1873.

To all whom it may concern.'

Be it known that I, EDWARD PICKFORD, of New Brunswick, in the county ofMiddlesex and State of New Jersey, have invented a new and usefulImprovement in Carpet- 1Iiooms, of which the following is aspecificaion:

For withdrawing the wires used in weaving pile fabrics I provide a hookwith a guard on one side of it to bear against the side of thewire-head, to which the wire is attached, to prevent the hook fromshifting so far over as to engage the next wire at the same time, and toinsure the hook against shifting in the other direction, so as to slipoff from the head of the wire. I make the face of the hook, and also theface of the Ishoulder of the plate or head of the wire with which thehook engages, like a half dovetail, beveled, and relatively arrangedwith the guard, that they are so locked together that all liability todisconnect during the operation of withdrawing the wire is avoided.

Up to this time the' face of the hook and the face of the wire-head havealways been made square to the plane of the hook and the wire, so thatwhenever the arm which carries the hook becomes loose, or can vibratelaterally a little for any cause, or in case the plates do not registerexactly with the hook, it is liable to slip off the head on one side andfail to draw the wire, or slip a little too far on the other side andengage two wires,

which, in either case, deranges the operation of weaving. To avoid thisit has been custernary to increase the thickness of the heads beyondthat of the wires and increase the thickness of the hookcorrespondingly; but this does not wholly overcome the difficulty, andit also creates another, which it is highly desirable to avoid, viz.,the separation of the Wires, so that they are sprung together by lthereed in beating up the fabric and soon get curved thereby so that a gooddeal of 1abor must be expended in straightening them.

Figure l is a plan view of a series of wires, and the device forwithdrawing them arranged according to my improvement. Fig. 2 is a planof the pullingdevice.- Fig. 3 is a side Fig. 4 is a elevation of thepulling device. side elevation of one ofthe wires and its head. Fig.`5is a plan view of a series of y, wires and a pulling device in dottedlines,

showin g the arrangement heretofore employed.

A represents the wires; B, the wire-heads;

C, the pulling device; D, the hook; E, the guard, which I employ inconnection with it;

and F, the shoulders ofthe heads, with which" the hook engages.

to prevent thehook from engaging the head of the adjacent wire, consistsof the plate represented in the drawing extending down from the pullerby the side ofthe hook and in front of it so as to strike the side ofthe head in case the puller has any tendency to swing y toward the nexthook and prevent it from i doing so, as represented in the drawing.. l

The bevel face of the hook D and the bevel shoulders F of the head Barealso clearly shown, and their operation will be understood withoutfurther explanation. What I claim as new is- 1. The combination vof theguard E with .p the wire-puller C and its hook, D, substany p tially asspecified.

2. The hook D provided with a beveled l face, and the plates orwire-heads provided with beveled shoulders F, in combination with thesaid guard E, substantially as speei- Witnesses: EDWARD PICKFORD.

ALFRED MARCH, J. KEARNY RICE.

